Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
Feed analysis: moisture |
Dry to constant weight |
|
|
Feed analysis: ash |
Residue left after heating to 550C for 3 hours |
|
|
Feed analysis: crude protein |
Estimate of protein content using nitrogen content - N x 6.25 |
|
|
Feed analysis: ether extract |
Estimate of lipid content |
|
|
Feed analysis: crude fibre |
Residual food from ether extract, boiled in acid and alkali |
|
|
Feed analysis: nitrogen free extracts |
1000 - (moisture+ash+CP+EE+CF) |
|
|
Feed analysis: dry matter |
Dry to constant weight |
|
|
Feed analysis: organic matter |
Dry matter - ash |
|
|
Define: neutral detergent fibre |
Plant cell wall material which is insoluble in neutral detergent. Contains lignin, cellulose, hemicellulose |
|
|
Define: Acid detergent fibre |
Fibre which is insoluble in acid detergent - contains lignin and cellulose of plant cell walls. |
|
|
Describe structural carbohydrates |
Found in plant cell walls. Includes dietary fibre which is a major energy source - mostly non-starch polysaccharides (cellulose, hemicellulose, pectin). Degradation depends on species, growth stage and composition. More maturity = more structural material, therefore lower nutrition. |
|
|
Describe non-structural carbohydrates |
Associated with cell contents, made available when cell wall broken down. CHO storage for plant - fructan and starch. |
|
|
What is lignin? |
Non carbohydrate monomer, gives strength to plants but reduces digestibility by binding plant CHO. Mature plants have more lignin. |
|
|
Describe fructan |
Non-structural CHO, found in the stem of grasses. Polymer of fructose, 3 types exist - higher molecular weight causes slower digestibility. |
|
|
What are water soluble carbohydrates? |
Type of non-structural CHO that is water soluble. Includes simple sugars and fructan. |
|
|
Describe starch |
Non structural CHO found in the seeds/ leaves/ stems of grain, legumes and roots. Made of amylose and amylopectin - their ratio affects digestibility in small intestines. |
|
|
What affects non structural CHO accumulation? I.e. 'When should you cut the grass?' |
1. Plant genetics 2. Part of plants 3. Season (in summer reduced growth causes increased NSC) 4. Time of day (peaks late afternoon, declines when dark) 5. Environment (higher NSC levels caused by: lower temp, more light, water stress, less fertiliser, no cutting) |
